Trapped Bose–Einstein condensates with quadrupole–quadrupole interactions<xref rid="cpb_27_12_120307fn1" ref-type="fn">*</xref><fn id="cpb_27_12_120307fn1"><label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11434011, 11674334, and 11747601) and the Key Research Program of the Chinese Academy of Sciences (Grant No. XDPB08-1).</p></fn>

Trapped Bose–Einstein condensates with quadrupole–quadrupole interactions**

Project supported by the National Natural Science Foundation of China (Grant Nos. 11434011, 11674334, and 11747601) and the Key Research Program of the Chinese Academy of Sciences (Grant No. XDPB08-1).

Wang An-Bang^{1, 2}, Yi Su^{1, 2, 3, †}

(color online) (a)–(c) Deformation parameters β_l0 versus QQI strength g_q for ℓ = 2 (solid lines), 4 (dashed line), and 6 (dash–dotted lines). The trap aspect ratios are λ = 1/8 (a), 1 (b), and 8 (c). (d) Angular dependence of the QQI in the rescaled coordinates for different λ’s.